#!/usr/bin/env python
# -*- coding: utf-8 -*-
#
#  Copyright 2016-2017 China Telecommunication Co., Ltd.
#
#  Licensed under the Apache License, Version 2.0 (the "License");
#  you may not use this file except in compliance with the License.
#  You may obtain a copy of the License at
#
#      http://www.apache.org/licenses/LICENSE-2.0
#
#  Unless required by applicable law or agreed to in writing, software
#  distributed under the License is distributed on an "AS IS" BASIS,
#  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
#  See the License for the specific language governing permissions and
#  limitations under the License.
#

import time
from bprint import cp

### ###########################################################
## Decorator print time cost of one function
#


class timetan(object):

    def __init__(self, banner):
        self.banner = banner

    def __call__(self, fn):
        def timefn(*args, **kwargs):
            start = time.time()
            result = fn(*args, **kwargs)
            end = time.time()
            logmsg = "%s: %f" % (cp.r("COST: %s" % self.banner), end - start)
            print(logmsg)
            return result
        return timefn
